
ASAHI KASEI
[AK4620A]
MS0368-E-00
2004/12
- 10 -
DAC SHARP ROLL-OFF FILTER CHARACTERISTICS (fs = 44.1kHz)
(Ta = 25
°
C; VA=4.75
~
5.25V; VD=3.0
~
3.6V, VT=3.0
~
5.25V; fs = 44.1kHz; Normal Speed Mode; DEM = OFF;
SLOW = “0”)
Parameter
Symbol
Digital Filter
Passband
±
0.01dB (Note 19)
-6.0dB
Stopband (Note 19)
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (Note 20)
GD
Digital Filter + SCF
Frequency Response: 0
~
20.0kHz
DAC SHARP ROLL-OFF FILTER
CHARACTERISTICS (fs = 96kHz)
(Ta = 25
°
C; VA=4.75
~
5.25V; VD=3.0
~
3.6V, VT=3.0
~
5.25V; fs = 96kHz; Double Speed Mode; DEM = OFF; SLOW
= “0”)
Parameter
Symbol
Digital Filter
Passband
±
0.01dB (Note 19)
-6.0dB
Stopband (Note 19)
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (Note 20)
GD
Digital Filter + SCF
Frequency Response: 0
~
40.0kHz
DAC SHARP ROLL-OFF FILTER CHARACTERISTICS (fs = 192kHz)
(Ta = 25
°
C; VA=4.75
~
5.25V; VD=3.0
~
3.6V, VT=3.0
~
5.25V; fs = 192kHz; Quad Speed Mode; DEM = OFF; SLOW
= “0”)
Parameter
symbol
Digital Filter
Passband
±
0.01dB (Note 19)
-6.0dB
Stopband (Note 19)
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (Note 20)
GD
Digital Filter + SCF
Frequency Response: 0
~
80.0kHz
Note 19. The passband and stopband frequencies scale with fs.
For example, PB = 0.4535×fs (@
±
0.01dB), SB = 0.546×fs.
Note 20. Delay time caused by digital filtering. This time is from setting the 16/20/24bit data of both channels to input
register to the output of analog signal.
min
typ
max
Units
PB
0
-
22.05
28
20.0
-
±
0.005
-
kHz
kHz
kHz
dB
dB
1/fs
24.1
75
-
-
±
0.2
-
dB
min
typ
max
Units
PB
0
-
48.0
28
43.5
-
±
0.005
-
kHz
kHz
kHz
dB
dB
1/fs
52.5
75
-
-
±
0.3
-
dB
min
typ
max
Units
PB
0
-
96.0
28
87.0
-
±
0.005
-
kHz
kHz
kHz
dB
dB
1/fs
105
75
-
-
+0/-1
-
dB